Research Article
Statistical Analysis of Twin Populations using Dissimilarity Measurements in Hippocampus Shape Space
Table 1
Output of classifier based on the
Wilcoxon-Mann-Whitney test statistic. For example, the first numerical column,
“H : CvM,” gives the number of HR classified as CTRL versus MDD and the second
numerical column, “H : MvC,” gives the number of HR classified as MDD versus
CTRL. Thus, we find that combining left and right, the shape comparisons LM
(LM-Left and Right) yields 20 HR classified as CTRL versus 2 HR classified as
MDD–-strong statistical evidence that HR is more like CTRL than MDD in
hippocampus shape space. (This analysis is based on 22 HR subjects, 33 MDD
subjects, and 59 CTRL subjects. Thus, e.g., the two HR numbers, H : CvM
and H : MvC, should sum to 22. Discrepancies are due to situations in which the
classifier makes “no decision” as described in [16]; (see also [3, page 183]).
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